148.4% is the change from 250 to 621
Calculation steps:
[( 621 - 250 ) ÷ 250] x 100 = 148.4%
Formula
Percentage change = [(621 - 250) / 250] x 100
Subtract the new number by the original number
621 - 250 = 371
371 ÷ 250 = 1.484
1.484 x 100 = 148.4%
Example